CVE-2023-20083
First published: Wed Nov 01 2023(Updated: )
A vulnerability in ICMPv6 inspection when configured with the Snort 2 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the CPU of an affected device to spike to 100 percent, which could stop all traffic processing and result in a denial of service (DoS) condition. FTD management traffic is not affected by this vulnerability. This vulnerability is due to improper error checking when parsing fields within the ICMPv6 header. An attacker could exploit this vulnerability by sending a crafted ICMPv6 packet through an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition. Note: To recover from the DoS condition, the Snort 2 Detection Engine or the Cisco FTD device may need to be restarted.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Threat Defense | >=6.2.3<=6.2.3.18 | |
| Cisco Firepower Threat Defense | >=6.4.0<=6.4.0.17 | |
| Cisco Firepower Threat Defense | >=6.6.0<=6.6.7.1 | |
| Cisco Firepower Threat Defense | >=6.7.0<=6.7.0.3 | |
| Cisco Firepower Threat Defense | >=7.0.0<=7.0.5 | |
| Cisco Firepower Threat Defense | >=7.1.0<=7.1.0.3 | |
| Cisco Firepower Threat Defense | >=7.2.0<=7.2.3 | |
| Cisco Firepower Threat Defense | >=7.3.0<=7.3.1.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco Firepower Threat Defense vulnerability?
The vulnerability ID for this Cisco Firepower Threat Defense vulnerability is CVE-2023-20083.
What is the severity level of CVE-2023-20083?
CVE-2023-20083 has a severity level of 8.6 (high).
What is the affected software for this vulnerability?
The affected software for CVE-2023-20083 is Cisco Firepower Threat Defense versions 6.2.3.18 to 7.3.1.1.
How can an attacker exploit this vulnerability?
An attacker can exploit CVE-2023-20083 by sending specific ICMPv6 packets to the affected device, causing the CPU to spike and potentially stopping all traffic processing.
Is there a fix available for CVE-2023-20083?
Yes, Cisco has released software updates to address the vulnerability. It is recommended to update to a patched version of Cisco Firepower Threat Defense.
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/weakness
- agent/author
- agent/last-modified-date
- agent/references
- agent/event
- agent/description
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/cisco
- canonical/cisco firepower threat defense
- version/cisco firepower threat defense/6.2.3
- version/cisco firepower threat defense/6.2.3.18
- version/cisco firepower threat defense/6.4.0
- version/cisco firepower threat defense/6.4.0.17
- version/cisco firepower threat defense/6.6.0
- version/cisco firepower threat defense/6.6.7.1
- version/cisco firepower threat defense/6.7.0
- version/cisco firepower threat defense/6.7.0.3
- version/cisco firepower threat defense/7.0.0
- version/cisco firepower threat defense/7.0.5
- version/cisco firepower threat defense/7.1.0
- version/cisco firepower threat defense/7.1.0.3
- version/cisco firepower threat defense/7.2.0
- version/cisco firepower threat defense/7.2.3
- version/cisco firepower threat defense/7.3.0
- version/cisco firepower threat defense/7.3.1.1